B&B Electronics 232XS5 manual Serial Data Configuration, RS-485 Support, Dce Dte, Dte Dce

Table 3. DCE MASTER PORT CHART

Master Port		Signal	A,B,C,D & E Ports
	(DCE)			(DTE)
Pin#	Direction	Description	Pin#	Direction
3	Input	Transmit Data (TD)	3	Output
2	Output	Receive Data (RD)	2	Input
7	Input	Request to Send (RTS)	7	Output
8	Output	Clear to Send (CTS)	8	Input
4	Input	Data Terminal Ready (DTR)	4	Output
6	Output	Data Set Ready (DSR)	6	Input
1	Output	Data Carrier Detect (DCD)	1	Input
5	<------->	Signal Ground (SG)	5	<----->

Table 4. DTE MASTER PORT CHART

Master Port		Signal	A,B,C,D & E Ports
	(DTE)			(DCE)
Pin#	Direction	Description	Pin#	Direction
3	Output	Transmit Data (TD)	3	Input
2	Input	Receive Data (RD)	2	Output
7	Output	Request to Send (RTS)	7	Input
8	Input	Clear to Send (CTS)	8	Output
4	Output	Data Terminal Ready (DTR)	4	Input
6	Input	Data Set Ready (DSR)	6	Output
1	Input	Data Carrier Detect (DCD)	1	Output
5	<------->	Signal Ground (SG)	5	<----->

The 232XS5 supports the following RS-232 signals: TD, RD, SG, RTS, CTS, DCD, DSR and DTR.

NOTE: All other lines are not connected.

The Smart Switch selects port A as the default port at power up.

232XS5-1005 Manual 5

B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104

B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445

Serial Data Configuration

In order for the host device that is connected to the master port to select any of the five ports, the Smart Switch must be set to match the host's communication format. Dipswitch “SW1” is used to select the communication format of the Smart Switch. Switch positions 1 through 3 select the baud rate. Switch position 4 selects 7 or 8 data bits. Switch position 5 determines if parity is enabled or disabled.

NOTE: A data format of 7 data bits, no parity and one stop is not allowed.

Switch position 8 selects the port configuration, see section titled "Port Configuration". Refer to Table 1. Always power down the smart switch when changing switch settings.

RS-485 Support

RS-485 support may be provided by adding a Model 485SD9TB RS-232 to RS-485 converter or other recommended device to the slave ports of the 232XS5.

Port power of about 30 mA may be applied through the DTR line (Pin 4) of the slave ports with jumper JP1-JP5. Normally, the jumpers are set to allow DTR to pass from the master port. To enable port power on a slave port, move the jumper from the“OFF” to “ON” position on the corresponding JP jumper. To allow DTR to pass from the master port to the slave port, move jumper from “ON” to “OFF” on the corresponding JP jumper. DTR can only pass through when the port is selected and the jumper is set to the “OFF” position on the corresponding slave port JP jumper.

Jumper	Setting
JP1-5
“OFF”	DTR passed *
“ON”	Port Power

	Table 5. Port Power Jumpers
	* = FACTORY DEFAULT
6	232XS5-1005 Manual
	B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104
	B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445